名词
中文翻译：副的
同义词：
['subordinate', 'secondary']
例句：
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1.The subcaudal vein is responsible for carrying blood from the lower extremities to the heart.
副静脉负责将血液从下肢输送到心脏。
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2.In a subcaudal position, the head of the animal is lower than its body.
在次级位置时，动物的头部低于身体。
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3. The subcaudal region is prone to infection due to poor hygiene.
由于卫生条件差，次级区域容易感染。